Device for cooling calender-rolls.



J. A. TEMPLE & L. H. BULLARD.

DEVICE FOR COOLING CALENDER ROLLS.

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RAN f U m hm W J. A TEMPLE & L. H. BULLARD.

DEVICE FOR COOLING CALENDER ROLLS.

APPLlCATlON FILED AUG.10, I917. L fi wfi. Patented Ja11.15,1918.

2 SHEETS-SHEET 2- WITNESSES I /%WUr(/OL C 5am {WM/z fl A ATEIEI I JACOB A. TEMPLE AND LEWIS .I-I. BULLARD, OF KALAMAZOO, MICHIGAN.

DEVICE FOR COOLING CALENDER-ROLLS.

Application filed August 10, 1917.

To all whom it may concern:

Be'it known that we, JACOB A. TEMPLE and LEWIS H. BULLARD, citizens of the United States, residing at the city and county of Kalamazoo, State of Michigan, have invented certain new and useful Improvements in Devices for Cooling Calender-Rolls, of which the following is a specification.

This invention relates to improvements in devices for cooling calender rolls.

Considerable difficulty has been experienced in the use of means commonly employed for the cooling of calender rolls be cause of uneven cooling, thereby causing un equal expansions resulting in spotting of paper, such as causing soft spots, and not infrequently burned spots. It is the aim of our invention to provide means preventing this unevenness in expansion and thereby overcome the objections resulting therefrom and prevent overheating.

The main objects of this invention are:

First, to provide improved means for cooling calender rolls of paper making machines comprising a header which is detachably mounted and detachably connected with the source of air supply so that it may be removed to afford free access to the stack.

Second, to provide improved cooling means for a stack of calender rolls in which the air is discharged at varying heights and controlled so that even cooling of the rolls is secured.

Third, to provide means for mounting the discharge nozzles upon a header.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

We accomplish the objects of our invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of our invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is a more or less diagrammatic side elevation showing the relative relations of the pressure pump, air conduit, and header, portions of the pressure conduit be ing broken away and a portion of the floor supporting the paper making machine being shown in section.

Fig. II is a plan view of the air pump Specification of Letters Patent.

Patented Jan. I5, 191%.

Serial No. 185,502.

and pressure conduit, portions of the latter being broken away.

Fig. III is a plan view of the header and nozzles associated therewith.

Fig. IV is a side elevation showing the connections between the pressure conduit and one end of the header, looking in the direction of the arrows atl of Fig. I.

Fig. V is an enlarged sectional detail of the structure shown in Fig. IV, taken 011 a line corresponding to line 55 of Fig. I.

Fig. VI is a more or less conventional illustration showing the relation of the header and discharge nozzle to the calender rolls, the section of the header being taken on a line corresponding to line 66 oi Fig. III.

Fig. VII is an enlarged sectional detail taken on a line corresponding to line 7-7 of Fig. III, showing details of the mounting of the adjustable nozzles.

Fig. VIII is an enlarged sectional detail taken on a line corrresponding to line S8 of Fig. III, showing further details of the mounting of the adjustable nozzles.

Fig. IX is a side elevation of the structure shown in Fig. VII, showing the shape of the nozzles and the ports in the header.

Fig. X is an enlarged sectional detail taken on a line corresponding to line 10-l0 of Figs. VI and XI, showing details of the connections of the risers for the upper nozzles to the header, and the valve structure for regulating the passage of air therethrough.

Fig. XI is an enlarged sectional detail taken on a line corresponding to line 11-11 of Figs. III and X.

Fig. XII is an enlarged sectional detail taken on a line corresponding to line 12 12 of Figs. X and XI.

In the drawing, similar reference char-ac ters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, 1 represents a stack of calender rolls, the rolls being shown conventionally and no effort being made to maintain proportions of other parts relative thereto.

Adjacent the lower roll of the stack and parallel therewith I mount a header 2 having a plurality of discharge openings 3 along the top alternating with ports 4: on the stack side of the header. These ports the lower ends of the valve casings (iwhich are provided with slide or gate valves 'l. The valve casings 6 are preferably made up of upper and lower members 8 and 9, respectively, having flange connections and complementary opposed recesses forming the ways for the slide valves 7.

A pin 10 prevents the complete withdrawal oithe valve. The valve casing has a collar 11 at its upper end with which the risers 12 and 13 may be telescoped, thus at fording a detachable connection for the risers and permitting their ready removal.

The risers are provided with elbows terminating in nozzles 14: directed against the rolls. The risers are of different length so that the different rolls of the stack are properly cooled. In practice we consider it most practical to direct the air between two adjacent rolls rather than against the side of a roll, but it will be understood that our invention contemplates the direction of the air against any desired portion of the rolls.

The ports 4: are controlled by. the sleeve valve members 15 which are rotatably mounted upon the header and provided with openings 16 adapted to be brought into register with the ports 1 or outer register therewith to cut off the ports.

These valve members are provided with nozzles 17, the outer ends of which are fiat- Vtened so as to spread the air therefrom,-

see Figs; III and IX. The valve-members 15 are split, as shown in Fig. VII, and provided with lugs 18 connected by clamping bolts 19, so that the valve members may be secured in their adjusted positions.

The valve members and header have circumferential coacting beads 20 and 21, that is, the beads 20 of the valve members embrace the beads 21 on the header, thereby supporting the valve members against longitudinal movement on. the header.

The air is supplied under pressure from a suitable pump, as 22, to the main conduit 23 having pairs of branches 24 leading there from. Each pairof branches supplies air to the header for a single stack of calender rolls. The branch pipes 24: have vertical extensions 25 leading through the fioor at F and are provided at their upper ends with a coupling member 26 having an annular recess therein adapted to receive the lower end of the risers 27, which are secured to the ends of the header 2.

Bailies 28 in the risers 27 deflect the air into the headers, The lower ends of the risers may be provided with gaskets 29, and we provide means, such as the draw bolts quires to afford convenient access to the stack and, if necessary, the header 1tseli is quickly and easily released and re-attached, as may be desired.

The nozzles 17 maybe directed againstf the lower roll as circumstancesiuay dictate or may be entirely out off if desired. f 1

We have illustratedjand described our" cooling means in the form in whichjwe have embodied the same in practice ,VVeflhave not attempted to illustrate or describe eerlain modificat1ons and adaptations which we contemplate as desirable to 'meet'certain 1 conditions, as we believe the disclosm'e made will enable those skilled in the art to which our invention relates to embody or adap the same as may be desired. 7

Having thus described our invention,

what we claim as new and desire to securef by Letters Patent, isz' 1. In a structure of the class described, the

combination with a stack of calenderrolls, of a cylindrical header provided with ports on its side adjacent the stack and with' discharge openings in itstop between such ports, sleeve valve members provided with nozzles rotatably'mounted on said header to control said ports and to direct the dis charge of air at varying angles, said header and valve members having coacting circumferential beads whereby the valve members are supported against longitudinal movement on the header, said valve membersbe ing split and provided with clamping lugs and bolts whereby they may be secured in their adjusted positions, .valve casings mounted on said header to. control said discharge openings in the upper side thereof and provided with collars adaptedto receive risers, and risers of different heights detachably engaged with said collars and provided with nozzles directed against, said stac r.

2. In a structure of the class described, the

combination with a stack of calender rolls, of a cylindrlcal header provided with ports on its side adjacent the stack and with dis- 7 charge openings in its top between I such ports, sleeve valve members provided with nozzles rotatably mounted on said header to control said ports and to direct the discharge of air at varying angles, valve casings mounted on said header to control said discharge openings in the upper side thereof and provided with collars adapted to receive risers, and risers of difierent heights de tachably engaged with said collars andpro-j vided with nozzles directed against said stack. A p l V 3. In a structure of the elass described,

the combination with a stack of calender rolls, of a cylindrical header disposed parallel and adjacent to the lower roll of the stack and provided with means at each end for detachably connecting it with a source of air supply, said header being provided with ports on its side adjacent the stack and with discharge openings in its top between such ports, sleeve valve members provided with nozzles rotatably mounted on said header to control said ports and to direct the discharge of air at varying angles, valve casings iounted on said header to control said dis charge openings in the upper side thereof and provided with collars adapted to receive risers, and risers of diiferent heights detachably engaged with said collars and provided with nozzles directed against said stack.

41;. In a structure of the class described, the combination of a cylindrical header provided with circumferentially elongated ports, and sleeve valve members provided with nozzles rotatably mounted on said header to control said ports and to direct the discharge of air at varying angles, said header and valve members having coacting circumferential beads whereby the valve members are supported against longitudinal movement on the header, said valve members being split and provided with clamping lugs and bolts whereby they may be secured in their adjusted positions.

5. In a structure of the class described, the combination of cylindrical header provided with circumferentially elongated ports, and sleeve valve members provided with nozzles rotatably mounted on said header to control said ports, the ports being of such length as to permit substantial rotative adjustment of said valve members without cutting off the air, thereby permitting the discharge of air at varying angles.

6. In a structure of the class described, the combination with calender rolls, of cooling means therefor comprising a cylindrical header detachably connected with a source of air under pressure and provided with a plurality of slot-like circui'nferential ports, a plurality of apertured sleeves constituting valves rotatably mounted upon said header, said sleeves being split and provided with clamping lugs and clamping bolts, said header having circumferential beads whereby the sleeves are supported against longitudinal movement and nozzles carried by said sleeves.

7. In a structure of the class described, the combination with calender rolls, of cooling means therefor comprising a cylindrical header detachably connected with a source of air under pressure and provided with a plurality of slot-like circumferential ports, a plurality of apertured sleeves constituting valves rotatably mounted upon said header, the ports being of such length as to permit substantial rotative adjustment of said valve members without cutting oi the air, thereby permitting the discharge of air at vary ing angles, and nozzles carried by said sleeves.

8. In a structure of the class described, the combination with a stack of calender rolls, of cooling means comprising a header connected with a source of air under pressure, the said header being provided with circumferential ports, and nozzles rotatablyn1ounted upon said header so as to be brought into register with said ports to discharge air upon said rolls, the ports being of such length as to permit substantial rotative adjustment of the nozzles without cutting off the ports so that air may be delivered at varying angles or to be moved out of register with said slots to shut off the passage of air through said nozzles.

In witness whereof, we have hereunto set our hands and seals in the presence of two witnesses.

Witnesses LUELLA G. GREENFIELD, MARGARET L. GLASGOW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

